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-rw-r--r--scripts/kconfig/conf.c39
1 files changed, 22 insertions, 17 deletions
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 671ff5364497..b35cc9303979 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -496,6 +496,7 @@ int main(int ac, char **av)
int opt;
const char *name, *defconfig_file = NULL /* gcc uninit */;
struct stat tmpstat;
+ int no_conf_write = 0;
tty_stdio = isatty(0) && isatty(1);
@@ -633,13 +634,14 @@ int main(int ac, char **av)
}
if (sync_kconfig) {
- if (conf_get_changed()) {
- name = getenv("KCONFIG_NOSILENTUPDATE");
- if (name && *name) {
+ name = getenv("KCONFIG_NOSILENTUPDATE");
+ if (name && *name) {
+ if (conf_get_changed()) {
fprintf(stderr,
"\n*** The configuration requires explicit update.\n\n");
return 1;
}
+ no_conf_write = 1;
}
}
@@ -684,29 +686,32 @@ int main(int ac, char **av)
break;
}
- if (sync_kconfig) {
- /* syncconfig is used during the build so we shall update autoconf.
- * All other commands are only used to generate a config.
- */
- if (conf_get_changed() && conf_write(NULL)) {
- fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
- exit(1);
- }
- if (conf_write_autoconf()) {
- fprintf(stderr, "\n*** Error during update of the configuration.\n\n");
- return 1;
- }
- } else if (input_mode == savedefconfig) {
+ if (input_mode == savedefconfig) {
if (conf_write_defconfig(defconfig_file)) {
fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
defconfig_file);
return 1;
}
} else if (input_mode != listnewconfig) {
- if (conf_write(NULL)) {
+ if (!no_conf_write && conf_write(NULL)) {
fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
exit(1);
}
+
+ /*
+ * Create auto.conf if it does not exist.
+ * This prevents GNU Make 4.1 or older from emitting
+ * "include/config/auto.conf: No such file or directory"
+ * in the top-level Makefile
+ *
+ * syncconfig always creates or updates auto.conf because it is
+ * used during the build.
+ */
+ if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
+ fprintf(stderr,
+ "\n*** Error during sync of the configuration.\n\n");
+ return 1;
+ }
}
return 0;
}